U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 30, 2025

All TitlesTitle 40Chapter IPart 52Subpart O - Subpart O—Illinois
§ 52.719 - [Reserved]
§ 52.720 - Identification of plan.
§ 52.721 - Classification of regions.
§ 52.722 - Approval status.
§ 52.723 - [Reserved]
§ 52.724 - Control strategy: Sulfur dioxide.
§ 52.725 - Control strategy: Particulates.
§ 52.726 - Control strategy: Ozone.
§ 52.727 - [Reserved]
§ 52.728 - Control strategy: Nitrogen dioxide. [Reserved]
§ 52.729 - [Reserved]
§ 52.730 - Compliance schedules.
§ 52.731 - Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides?
§ 52.732 - Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of sulfur dioxide?
§§ 52.733-52.735 - §[Reserved]
§ 52.736 - Review of new sources and modifications.
§ 52.737 - Operating permits.
§ 52.738 - Significant deterioration of air quality.
§ 52.739 - Permit fees.
§ 52.740 - Interstate pollution.
§ 52.741 - Control strategy: Ozone control measures for Cook, DuPage, Kane, Lake, McHenry and Will Counties.
§ 52.742 - Incorporation by reference.
§ 52.743 - Continuous monitoring.
§ 52.744 - Small business stationary source technical and environmental compliance assistance program.
§§ 52.745-52.746 - §[Reserved]
§ 52.750 - Original identification of plan section.
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